In this project, we investigate the plasmons supported by alloy thin films composed. The effect of various parameters like alloying element, composition and structure are being investigated. Further details will be added soon.
In this project, we propose to use templates prepared by shadow sphere lithography for the assembly of anisotropic plasmonic nanoparticles. Further details will be added soon.
In this theme, active plasmonic devices are realized by integrating a single layer graphene with plasmonic metasurfaces. This integration enables the dynamic tuning of the plasmon resonance by application of a back gate voltage to graphene. We have demonstrated that such devices can be used to modulate the phase and polarization of the reflected wave. Furthermore, it is possible to extend this system so that it operates as a polarization detector or a polarimeter.
Modes of a plasmonic system provide significant insight into the properties of the structure. Specifically, we developed an eigenmode analysis based on the Green’s tensor approach, which can help in understanding both the bright and dark modes in a cluster of plasmonic nanoparticles. This analysis has been used to understand the second harmonic generation (SHG) from the surface of the nanoparticles in the cluster.
For practical applications, it is vital to develop nanofabrication techniques that can be used for fabricating plasmonic nanostructures at a fast pace and be cost-effective. Nanoimprint lithography is a promising technique that has the potential to meet both the aforementioned requirements.